Planoohaph co



B. L. BLAIR.

AIR GUN DISCHARGE MEANS.

APPLICATION FILED APR.13. I917- RENEWED JAN. 10. I918.

1 3 1 4: 850 Patented Sept. 2, 1919.

{fllll/IIIIIIIII IlIIIl/lll/lIl/l '1 I llIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII7IIIIIIIIIIII IUII IIIIII lIIlII/II II Il/IIIIIIIl/IIIIIIII Will/Ill BENJAMIN L. BLAIR, OF INDIANAPOLIS, INDIANA.

AIR-GUN DISCHARGE MEANS.

Specification of Letters Patent.

Patented Sept. 2, 1919.

Application filed April 13, 1917, Serial No. 161,791. Renewed January 10, 1918. Serial No. 211,312.

for the purpose intended which will be setby the same mechanism which inserts a projectile in the barrel to be discharged.

I accomplish the above and other objects which will hereinafter appear, by the mechanism illustrated in the accompanying drawing, in whicha Figure lis a longitudinal vertical section through the gun-casing, showing my invention in side elevation, with the parts set ready to shoot. Fig. 2 is a horizontal section of the gun-casing showing myinvention in plan view as the parts are after a discharge, in full lines, and set for shooting,

in. dotted lines. Fig. 3 is a section on the line 33 of Fig.2, enlarged, and Fig. 4 is a section on the line 4-4 of Fig. -1, enlarged. Like charactersof reference indicate like parts in the several views.

Y The base 5 supports the operative parts of my device, and is itself supported by a yoke 6, to which it is pivoted, which yoke is supported from asub-base, not shown. Compressed air, from a suitable source (not shown) is supplied through a'pipe 7, to the interior of a cylinder 8, which discharges through a nozzle 10,,into a projectile barrel 11. Projectiles 12 are supplied by gravity from a chute 13. The barrel is moved from the position shown in Fig. 1 to that shownin Fig. 2, tol-oad, by means comprising lateral arms 14, which are connected with a pair of rods 15, which extend toward the breech of the gun and pass through a guide bar 16, supported in a fixed position from the base 5. Nearthe'bar 16 is a cross bar 17 having its ends fixed to the two rods whereby the rods will be moved longitudinally by moving the bar, thereby moving the barrel into contact with the cylinder 8, or

away therefrom, as desired. A. fixed arm 18 is fastened to the bar 17, and extends rearwardly, and to its end a rod 18 is hingedly jointed. The other end of the rod is pivotally connected with the end of a crank on a vertical rock-shaft 19, supported by base 5, and on the end of the rock-shaft below the base is a lever 20, by which the shaft 19, is manually rocked.

The mechanism for admitting the compressed air to the projectile barrel 11, is controlled by the movement longitudinally and inwardly of a rearwardly projecting rod 21, which is made normally and initially to project by a spring 22. The inward movement of the rod 21 is effected by the contact of a rotating cam 22, with the end of the rod. The cam is loosely mounted on a shaft 23, journaled between the two parallel bars of a frame 24. The cam has a half clutch on one side which is forced by a spring 26, into engagement with a half clutch on a sheave 25, mounted in a fixed manner on the shaft. On the other side of the cam from the sheave 25 outside of the frame 24, is a second sheave 27 also mounted in a fixed manner on the shaft, and integral with sheave 27 is a ratchet wheel 28, having a notch which is engaged by a pawl-lever 29, pivoted to the frame 24, and normally pressed by a spring30, against the wheel 28. The free end of the pawl-lever is connected by a wire 31, with a trigger-lever 32, pivoted as shown, in the hollow of a handle 33, on a disk 34 at the end of the gun.

Attached atone end to the sheave 27, and wrapped under it is a chain 35, which is fastened to a spring 36, in turn fastened to the disk 34.

Carried by the movable cross-bar 17, is a tube 48, which houses a spring 37. The inner end of the spring is fastened to a threaded eye-bolt 38, and on the latter, against the end'of the tube, is a nut 39. The other end of the spring is fastened to a chain 40, which extends to and is fastened to the sheave 25, passing over the top of the latter. The tension of the spring in the tube attached to the chain, is regulated by the adjustment of the nut on bolt 38. The pull of this spring is made enough greater than that of spring 36, to rotate the shaft 25 against the resistance of the latter, when the pawl 29 is disengaged.

The operation of my device is as follows: Assuming that the gun has been discharged and a is' desired to am and sa e for is returned to its first position,

another discharge; the hand lever 20, is

moved in the direction ofgthe arrow,Fig'. 2,

to the position shown by-the dottedlines. This moves. the crank on rock-shaft19 from the position shown in Fig. '1, to that shown iIiFig. 2', and moves the cross-bar 17 from the position shown by dotted lines in Fig.7 2,

to the position shown by the full'lines', which carries with it thetube 748' and spring 37, and releasing the chain ,to which it is attached allows the chain pulled by the'spring 36, to 1 11 is closed and the cross-bar 17 "is returned to "the position shown in .Fig. .1 which tightens the spring "and its; chain, and

7 would reverse the rotation of shaft 23, but

for the-pawl 29. The gun-is thenin posi- Ttion 'toshoot, and will bedisch'arged by the withdrawal of the pawl, by pulling mani ually on the' trigger 32. Then the action of spring 3 7rotates the shaft andfcam, causing the cam to press the rod 21, inwardly.

- 1 Havingthus fully described my invention and illustrated it by the most approved details now known to me, but to which details, I do not desire to be unduly limited,

nor indeed, more than'is' pointed'out in the claims,-what Ido' claim as new and wish to secure by Letters "Patentof the United States,, is

1. In an a rgunQthecombinationof an "air container having a push-ro'd actuated discharger, of a rotatable cam adapted to contactwith and push ing said rod, spring means'fto' operate the cam, means vto set the spring, apawland ratchet means tohold the set spring, and atrigger means to release the p in s V 2. In an air gun,,the combination of an aircontainer having a push-rod'jactuated 'dis'charger, of a rotatable cam adaptedfby rotation to contact with andpush in said rod, spring means to rotate the cam, means to temporarily release thetension ofsaid spring, means'c'omprising a second spring to set the cam while the tension of' theffirst s'pringis temporarily released, a pawl and ratchet means to hold the set cam against 7 the restored action: of the first spring, and

a' trigger means. to disengage the pawl and release the firstsprlng.

{ daili s- Mm; 15a mane obtained for the barrel a chain and sprlng meansto rotate the 3 .:In an air gun, the combination of an air container having a push-rod actuated dischargerja Irota'ta-ble cam adapted by rotation to contact with and push in the rod, spring means torotate the cam when set, means to load the gun and simultane ously set the spring, and trigger means to liberaterthe set spring; I

' 4. In an air gun, a compressed air container, a push-rodprojecting therefrom, a Y Y shaft, a cam looselymounted-onthe shaft, a sheave fixed on the shaft, v said cam and sheave having interlocking clutch halves, a

spring pressing the cam toward the sheave,

a chain and spring means to rotate the shaft, means for releasing; .-thetension of ,the' 7.:

V sheave while the tension of the spring is V spring, means to wind up the chain on the released, pawl and ratchetmeans to hold the tension and a trigger. means :to disengage the pawl. I V a v a 5. In an air gun, a; compressed air container, ,a push-rod projecting; therefrom, a shaft, acam loosely mount'edfon the shaft,

a sheave fixed on the shaft, said cam and sheave having. interlocking. clutch halves," a spring pressing the cam toward thesheave, a chain and spring meansjto rotate the shaft,

means for movingjthe,spring ietoward' jthe J sheave to release the tension, means to; wind the chain on the sheave while theltens'ion of the spring is released, ,pawlf and ratchetmeans to hold the shaft when the tension of the spring is restored-by movingit away 7 from thefshaft,jand a trigger means to disengage the pawl.

' 1 6. In an air" gun, a c'ompressed air on.

tainena push-rod "projecting therefrom, a shaft, a camllooselymountedon the shaft, a a, sheave fixed on the shaft,;-'said cam and sheave having interlocking .elutchihalves, a

spring pressing the cam} I toward the sheave,

' shaft,

spring than the first, attachedito the second sheave, pawl and ratchetgme'ans to 'holdthe shaft'whenlt he tensionof the first spring is restored by moving it away non the sheave, and a triggermeansto disengaget'he pawl.

means for movlng the. spring toward the sheave'to release its tension; means to wind 1' I the chain on the sheave while the tension of 7 the spring is released comprising a second sheave'fixed on the shaft,'aichain and-weaker ,In' witness whereo-f,lhave hereunto set my hand and seal at Indianapolis, Indianafthis 22nd day ofMarch, ,A-. D ;";one thousand nine hundred and seventeen;

: 'BENJAMI'NL: LAIR; i p12 8;

fi'v eents' each; tyivaaares ng the? fcbn isiiineriitg Patents} wasnmgton n. G." 

